This is usually due to the dashboard's automatic brightness sensor being temporarily blocked, a system reset after a software update, or a potential power supply issue with the infotainment unit. A common, quick fix for many owners of models like the Volvo XC90 or S90 here is to simply clean the sensor area (often on the dashboard top near the windscreen) from dust or a sunshade, then restart the car after locking it for 5 minutes. For electrical checks, Fuse F16 in the passenger-side fuse box, which powers the centre display, is a known point of failure in high heat. The 2024 RTA Dubai vehicle inspection manual notes that intermittent screen faults do not cause an immediate test failure if other critical lights are functional. According to a 2023 advisory from MOI UAE's vehicle technical committee, prolonged use of 'Max AC' while idling in summer traffic can strain the electrical system, potentially affecting auxiliary units like screens. Repair costs vary: a sensor cleaning at a Sharjah-based specialist might cost around 150-250 AED, while a full display unit replacement for a GCC-spec model can range from 4,000 to 7,000 AED for parts alone, with labour adding 500-800 AED.
- Common cause: Dust-blocked ambient light sensor.
- Quick fix: Clean sensor, lock car for 5+ minutes.
- Professional diagnosis cost: 150-250 AED at independent garage.
